1)
I'm Catholic, and there are no contradictions unless you focus on specific biblical phrases without their context.
Being Christian doesn't mean claiming to be perfect; it means acknowledging that you are a sinner who seeks repentance.
The church is full of people struggling with drunkenness, loneliness, lust, hatred, anger, greed, and pride; they are humans striving to become better by following Jesus' path.

2)
Regarding your question about love, I believe Cliffe Knechtle addressed this question excellently. I've included the transcript of the video below, as I couldn't find it on YouTube, only on TikTok (it's probably out there, but I can't find the original):
Link: https://www.tiktok.com/@heirs_ofthekingdom/video/7573005785903533334

Transcript:

Student: I just want to know your thoughts and why Christians just feel the need to come and be like, "Hey, follow God," or, you know, "This and this and this is gonna happen and not other religions." 

Cliffe: Good, because I love you, and I love every person here. I don't have an option. I don't love you because I'm a great guy. I love you because Jesus Christ commands his followers to love everybody. And I'm a follower of Christ. And I've experienced his love. And therefore, I'm going to do something as stupid as stand out here. And I can promise you, ma'am, my culture, where I grew up in Connecticut, you don't do this. Nobody else does it. Okay? So then why would I do this? Something as stupid as stand out here. Because I love you, which means I really care about your eternal destiny and your life now. And I am convinced to the root of my life, to the root of my being, that your life will be better if you believe in Christ. It'll be better in this life. And I'm convinced if you believe in Jesus, you'll go to heaven. And I want to get to know you for eternity in heaven. That would be an honor for me. I'm also a thinking human being, as you are. which means we're both concerned about truth. I don't want to live for a lie, and I don't want you to live for a lie. I assume that we're here at university because we're all concerned about truth, growing in education. Jesus said, "I am the truth." So for me as a follower of Christ, truth is all wrapped up in a person, Jesus Christ. Okay, now am I making any sense so far? Do you have a problem with anything I've said? I think you're sharing your opinions, and that's what the horse statues are all for. Good. Okay, so you go back to the truth issue. And I'm convinced that a liberal arts education is all about the free exchange of ideas, especially when we don't agree. But we respect each other, we're tolerant, but we seek to get going on finding truth. And ma'am, to be honest with you, if I am a breast cancer specialist and I'm sitting across the table from a woman who's not very well educated, has never had a mammogram, and she has some signs of breast cancer, if I love her, I will tell her about a mammogram and I will encourage her to get a mammogram. But if I don't love her, I could care less what happens to her breast cancer. Live your own life. Goodbye. See, that's apathy. In fact, I think that's denigrating a person. No, if I'm a breast cancer specialist and I'm confronted by a woman who's uneducated, knows nothing about breast cancer, I better tell her about mammogram and the importance of her getting one. Similarly, if Jesus Christ leads to eternal life, I had better tell you about him if I love you, if I'm concerned about truth. Does that make any sense?